Loom-shuttle.



G. G. PETZOLD.

LOOM SHUTTLE.

APPLICATION FILED FEB. 2, 1911.

1,036,699, Patented Augz 27, 1912.

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CHARLES G. PETZOLD, 0F PROVIDENCE, RHODE ISLAND.

LOOM-SHUTTLE.

Specification of Letters Patent.

Patented Aug. 27, 1912.

Application filed February 2, 1911. Serial No. 606,074.

To all whom it may concern:

Be it known that 1, CHARLES G. PETZOLD, a citizen of the United States,residing at Providence, county of Providence, State of Rhode Island,have invented an Improve ment in Loom-Shuttles, of which the followingdescription, in connection with the accomp-anying drawing, is aspecification, like letters on the drawing representing like parts. 7

This invention relates to shuttles for looms and has for its object toprovide a novel shuttle provided with means forv detecting the presenceof a knot or slub in the yarn and breaking the yarn if a knot is foundtherein so that the shuttle-changing or loom-stopping mechanism which isordinarily brought into play upon the breaking of the yarn will operateto change the filling or stop the loom as the case may be, and also toprovide a simple arrangement by which the yarn will be broken, thuscalling into play the loom-stopping or fillingchanging mechanismwhenever a float occurs or whenever the shed is not properly formed sothat the warp threads bind on the shuttle.

The features wherein the invention resides will be more fullyhereinafter described and then pointed out in the appended claims.

In the drawings wherein I haveillustrated a selected embodiment of myinvention which is sufficient to show the principle thereof, Figure 1 isa plan view of the tln'ead-delivery end of the shuttle showing theimprovements; Fig. 2 is a section on the line 00-00, Fig. 1; Fig. 3 is aside view of the slub or knot detecting plate and the fioat detectordetached from the shuttle.

The shuttle body is shown at 1 and the end of the spindle on which theyarn 3 is wound is shown at 2. The yarn is delivered from the shuttlethrough a shuttle eye 4 of some suitable or usual construction. Theseelements are such as are commonly found in shuttles and form no part ofthe present invention.

My improvements consist of a knot or slub detecting plate 5 which is setinto the shuttle to extend across the bobbin-receiving chamber 6adjacent the thread-delivery eye 4. This plate may be held in theshuttle in any suitable way and I have herein shown the edges of it asfitting in the grooves 7 formed in the sides of the shuttle and as heldfrom vertical movement by means of a cross pin 8 which extends acrossthe shuttle and engages the lip or flange 9 at the bottom of the plate5. This plate is provided with the narrow slot 10 through which the yarn3 passes, said slot being of a width to freely admit the yarn providedthe latter is perfectly smooth and free from knots, but being so narrowas to prevent'a knot or slub from being drawn through. Asa result if aknot occurs in the yarn, the said knot will catch on the plate 5 and theyarn will be broken, thus calling into play the usualfillingreplenishing or loom-stopping mechanism which are renderedoperative whenever the filling does break or becomes exhausted. I haveshown the slot 10 as having a widened mouth 11 to facilitate thethreading up of the shuttle. Associated with this plate 5 is a devicefor severing the thread whenever a fioat'occurs, or whenever the shed isnot properly formed. This device comprises a lever 12 pivoted to theplat-e at 13 and having a yarn-severing finger 141 which overlies theplate 5 and is adapted to swing across the slot 10 therein, as shown indotted lines Fig, 2. The lever 12 is also provided with a finger 15which extends at right angles to the plate 5 and adjacent the upper edge16 of the shuttle body. The lever is normally held in the full lineposition Fig. 2, by means of a spring 17 or some other suitable device,and when in this position the finger 14 is at one side of the slot 10and the finger 15 is above the level of the top of the shuttle. Ifduring the weaving operation the shed is not properly formed so that thewarp threads press on the upper side of the shuttle during its flight,the engagement of these warp threads with the arm 15 will swing thelatter downwardly into the dotted line position, thus moving the finger1 1 across the slot 12 and thereby breaking or severing the yarn 3 aswill be obvious. During this operation the finger 1 1 and the edge ofthe slot 10 act somewhat as a pair of shears for cutting or breaking theyarn. As soon as the yarn is broken, the usual weftdetecting mechanismcomes into play to either set in operation the filling-replenishingmechanism or loom-stopping mechanism as the case may be.

It will be observed that my device is very simple and can be readilyapplied to any shuttle.

Various changesin the construction of the parts may be made withoutdeparting from the invention. g y y Having fully described my invention,what I claim as new and desire to secure by Letters Patent is 1. In ashuttle, the combination with a shuttle body having .a bobbin-receivingchamber and a delivery eye, of a plate eX- tending transversely acrossthe end of the bobbin-receiving chamber and provided with a slot ofsuflicient width to receive freely yarn which is free from knots but ofinsufiicient width to permit knots to pass therethrough, a yarn-breakingmember pivoted to said plate to swing parallel thereto, and means toactuatesaid member to break the yarn on the occurrence of a float. 2. Ina shuttle the combination with a shuttle body having a bobbin-receivingchamber and a delivery eye, of a plate extending transversely across theend of the bobbin chamber and provided with a slot i name to thisspecification, in the presence of through which the yarn passes, ayarnbreaking member pivoted to said plate to swing arallel thereto andhavin a finger extending therefrom in the direction of the a length ofthe shuttle and occupying a posit-ion normally slightly above the sideof the I shuttleso that if the warp threads bind on the shuttle theywill press said finger and swing the yarn-breaking member across theslot thereby to break the yarn.

. 3. In; a shuttle, the combination with a shuttle body having abobbin-receiving chamber, and a delivery eye of a plate extendingtraversely across the end of the bobbin chamber and provided with a slotthrough which the yarn passes, a yarnbreaking member pivoted to saidplate at the upperedge thereof adjacent said slot, said member having. aportion extending laterally therefrom, and a finger extending from theend of said lateral portion in the direction of the length of theshuttle and occupy- 7 ing a position slightly above the side of theshuttle, so that if the warp threads bind on the shuttle they will presssaid finger outjwardly {breaking member across the slot to break theyarn.

and thereby swing the yarn- In testimony whereofpl have signed my G.PETZOLD.

Copies of this patent may be obtained for five centsea'ch; by addressingthe Commissioner of Patents,

Washington, D. 0.? I

